JetBlue Airways has Long Island City residents looking up, but this time it's not a plane passing overhead.

The airline company added their logo to the New York City skyline last week via a 40-foot-high sign illuminated with LED lights.

Each letter is individually formed as a steel structure with an acrylic facade. The “j” is the tallest letter, measuring in at 25 feet, four inches tall. During the day the sign will be blue and at night the logo will be lit up white.

The sign is located on the roof of the company's new headquarters at 27-01 Queens Plaza North, the historic Brewster Building, where JetBlue moved in April of 2012.

Mayor Michael Bloomberg attended the ceremonial lighting of the sign on Wednesday, Aug. 29, and spoke about how important JetBlue is to the New York economy.

“The company employs more than 4,300 people at our airports and maintenance facilities, and another 1,000 here at it's corporate offices,” he said. “It's role in New York is growing every single day.”

The mayor went on to discuss other economic powerhouse companies based in Long Island City, such as Pepsi and Silvercup Studio and their iconic signs.

“It is only fitting that starting today New York's hometown airline joins them with it's own place of honor in the sky,” he said.

The sign shows JetBlue's ties to New York City. The company was established in New York in 1998, and the company's first flight took off from John F. Kennedy International Airport in 2000, when the airline only flew to two destinations.

“It's a really an exciting milestone for our company,” said Dave Bargar, JetBlue chief executive officer. “It is not only about doing business here, it is about being ingrained in the community and bringing a little bit of New York with us everywhere we go.”

The sign was the subject of controversy when it was proposed because community members were concerned over how bright the sign would be, who would be affected by the light, and how many other companies would follow suit and want to add their logo to the Long Island City skyline. Ultimately, the sign was approved.

“This is a great day for Long Island City and a great day for Queens,” said Councilman Jimmy Van Bramer. “All of us are thrilled to have JetBlue.”